No fuck that.
Nearly every other language has a "you" plural and a "you" singular and it clears up a hell of a lot of confusion.
If you were with a group if friends and hat a dumb hat on and you and your friends were planking and I called out.
"You are stupid!"
I could be talking about stupid you(singular), stupid you (singular) and your stupid friends, just one of your stupid friends, or like 12 combinations of a small group of you(singular) your stupid friends without including all of them.
If I were to call out
"Y'all are stupid!"
You instantly know I am referring to stupid you(singular) and everyone of your stupid friends.